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Finding the Fourth Proportional to 66,996.28, 100,488.92 and 19,607.64

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Solution

The fourth proportional to 66,996.28, 100,488.92 and 19,607.64 is: 29,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,996.28 : 100,488.92 = 19,607.64 : x
  2. Step 2: Convert to fraction form
    66,996.28/100,488.92 = 19,607.64/x
  3. Step 3: Cross multiply
    66,996.28x = 100,488.92 × 19,607.64
  4. Step 4: Simplify right side
    66,996.28x = 1,970,350,567.35
  5. Step 5: Solve for x
    x = 1,970,350,567.35/66,996.28
  6. Step 6: Final answer
    x = 29,409.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.